Kevin Costner is “officially a Swiftie.”

The “Yellowstone” star raved about his experience at Taylor Swift’s concert as he posted a series of videos to his Instagram Thursday.

“My videos are blurry, but I had an amazing time with my daughter at the @taylorswift show. I was absolutely blown away watching her art bring so many people together,” he captioned the post.

“I had a great view of her band and had a blast watching them, too,” he added. “An inspiring night. I’m officially a Swiftie!”

Costner, 68, attended the pop star’s Eras Tour in Los Angeles on Monday with his 13-year-old daughter, Grace Avery.

The actor was even caught flashing a subtle grin as the singer performed her breakup anthem “We Are Never Ever Getting Back Together.”

Video obtained by Page Six showed Costner in a private suite at SoFi Stadium with his daughter, who was rocking out to the hit track from Swift’s album “Red.”

The “Bodyguard” star’s outing comes amid his messy divorce from estranged wife Christine Baumgartner, with whom he also shares sons Cayden, 16, and Hayes, 14.

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The handbag designer, 49, filed for divorce from the actor in May after 18 years of marriage, citing “irreconcilable differences.”

A judge ruled last month that Costner had to pay her $129,755 per month in child support — which was much lower than Baumgartner’s original request of $248,000 a month.

Costner was also ordered to pay $100,000 in forensic costs and $200,000 in attorney fees.

Despite the contentious split, the A-lister has continued to spend time with his kids this summer.

In late July, he was spotted enjoying quality time with his children in Aspen, Colo., after Baumgartner was photographed vacationing in Hawaii with Grace.

Costner also shares three adult children — Annie, 39, Lily, 36, and Joe, 35 — with his ex-wife Cindy Silva. He also shares son Liam, 26, with ex Bridget Rooney.